| Customization: | Available |
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| Certification: | CE, ISO |
| Color: | Customized |
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Pressure Vessels Heads are crucial components of pressure vessels that seal the ends of the cylindrical section or shell. Known by various names such as Dish Ends, Formed Heads, End Closure, End Caps, Vessel Ends, and Vessel Caps, the most common term used is Dish Ends.
There are four fundamental types of Pressure Vessels Heads, widely employed in the fabrication of pressure vessels.
The simplest form of pressure vessels heads, Flat Heads, is less preferred due to limited pressure-bearing capacity. Its lower radial section leads to maximum exposure on the flat area, rendering it less economical.
Common terms associated with Flat Heads include Inside Diameter (ID), Knuckle Radius (R), Dish End Total Height (H), and Straight Face (SF). A general drawing representation can be seen above.
Ellipsoidal Heads are the most widely utilized pressure vessel heads, offering extensive radial sections for pressure distribution. They withstand maximum pressure and are considered the most economical option, with dish end thickness matching shell thickness under the same conditions. Often configured as 2:1 Ellipsoidal Section.
Common terms for 2:1 Ellipsoidal Heads include Inside Diameter (ID), Crown Radius (C.R), Knuckle Radius (K.R), Dish End Total Height (H), and Straight Face (SF). Although they require more forming time than Flat and Torispherical Heads, they remain the most economical choice.
Torispherical Heads, distinguished by a substantial radial section, withstand significant pressure though less than Ellipsoidal Heads. They are less economical but favored for their reduced forming time.
For equivalent design conditions, Torispherical Heads' thickness is roughly 1.77 times the shell thickness at the same design pressure and temperature.
In Torispherical Heads, commonly used terms are Inside Diameter (ID), Crown Radius (C.R), Knuckle Radius (K.R), Dish End Total Height (H), and Straight Face (SF). A general drawing is displayed above.
Requiring less forming time than Ellipsoidal Heads, Torispherical Heads are preferred for their simplicity. They are also known as Flange and Dished Heads.
Hemispherical Heads, used in pressure vessel fabrication, have the largest radial section of all heads, offering maximum pressure distribution. For identical design conditions, their thickness is about half the shell thickness for the same pressure and temperature.
Despite being the most economical, Hemispherical Heads demand the longest forming time.
In the realm of Hemi Heads, several key terms define their excellence: Inside Diameter (ID), Crown Radius (R), Total Dish End Height (H), and Straight Face (SF). These terms are crucial as the choice of Dish Ends is meticulously determined based on design conditions and their applicability to pressure vessel heads, ensuring optimal performance and safety.
Discover the four fundamental types of dish ends integral to pressure vessel fabrication. These essential components are crafted with precision, taking into account standard relationships with their inside diameter. From a fabrication standpoint, calculating various terms such as Dish End Terminology, Blank Diameter, Weight, Surface Area, and Volume is imperative to guarantee flawless dish end production.
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